Spool Performance AMG Vent-to-Atmosphere BOV Blow-Off Valve Adapters

AMG Vent-to-Atmosphere Blow-Off Valve Adapters

AMG cars already sound great—but like most modern turbo setups, the system recirculates excess boost pressure back into the intake. That means you’re not really hearing what the turbos are doing when you lift off the throttle.

These adapters change that behavior.

Instead of routing the pressure back in, they vent it to atmosphere. So when you lift, you get that sharp, noticeable turbo dump instead of it being muted through the system.

It’s not subtle—but that’s the point.

It doesn’t make the car faster. It doesn’t change performance. It just makes the car more engaging to drive because you can actually hear and feel what’s happening.

On convertible models, it’s even more noticeable. With the top down, the sound is more present and adds a lot to the overall driving experience.

What to Expect

• Noticeable turbo discharge sound when lifting off throttle
• No change in power or performance
• Simple install, no tuning required
• More pronounced on convertible models

It’s one of those small changes that makes you want to stay in the car longer, take the long way home, and actually enjoy every shift and throttle input.

For how simple and affordable it is, it adds a surprising amount of enjoyment to the overall experience.

Fitment

Compatible with Mercedes-AMG vehicles equipped with the M177 / M178 4.0L Biturbo V8:

C-Class AMG

• C63 / C63 S Sedan (W205) — 2015–2021
• C63 / C63 S Coupe (C205) — 2017–2021
• C63 / C63 S Cabriolet (A205) — 2017–2021

E-Class AMG

• E63 S Sedan (W213) — 2018–2023
• E63 S Wagon (S213) — 2018–2023

GLC AMG

• GLC63 / GLC63 S SUV (X253) — 2018–2023
• GLC63 / GLC63 S Coupe (C253) — 2018–2023

GLE AMG

• GLE63 S SUV (W167) — 2021–Present
• GLE63 S Coupe (C167) — 2021–Present

GLS AMG

• GLS63 SUV (X167) — 2021–Present

GT 4-Door AMG

• GT63 / GT63 S (X290) — 2019–Present
• GT63 S E Performance (X290) — 2023–Present

AMG GT

• GT / GT S (C190) — 2016–2021
• GT C / GT C Roadster (C190 / R190) — 2018–2021
• GT R / GT R Roadster (C190 / R190) — 2018–2021
• GT Black Series (C190) — 2021

SL AMG

• SL63 (R232) — 2022–Present

G-Class AMG

• G63 (W463) — 2019–Present

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